<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Test</title>
    <script src="jQuery.js">
    </script>
    <style>
        div {
            width: 200px;
            height: 200px;
            background-color: pink;
        }
    </style>
</head>

<body>

    <div>1</div>
    <script>
        $('div').hide();
    </script>
    <table>
        <thead>
            <tr>
                <th>栏目一</th>
                <th>栏目二</th>
                <th>栏目三</th>
                <th>操作</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>栏目一数据1</td>
                <td>栏目二数据1</td>
                <td>栏目三数据1</td>
                <td><a href="#" class="remove">删除</a></td>
            </tr>
            <tr>
                <td>栏目一数据2</td>
                <td>栏目二数据2</td>
                <td>栏目三数据2</td>
                <td><a href="#" class="remove">删除</a></td>
            </tr>
        </tbody>
    </table>
    <a href="#" id="add">增加一行</a>
</body>

</html>